Added trigger reference to WaypointData, unused

WaypointData also inherits from Entity now, so I could alias Entity's API
for it too. I've also made a number of comment tweaks.

server/server_logic.cpp

@@ -105,6 +105,7 @@ void ServerApplication::Init(int argc, char* argv[]) {
 	characterMgr.SetDatabase(database);
 
 	roomMgr.SetLuaState(luaState);
+	waypointMgr.SetLuaState(luaState);
 
 	std::cout << "Internal managers initialized" << std::endl;